Automatic steam vacuum-pump



(No Model.)

H. SNOOKS. AUTOMATIC STEAM VACUUM PUMP.

No 462,069. Patented 0013.27, 1891.

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- H. SNOOKS.

AUTOMATIC STEAM VAGUUMTUMP.

Patented Oct. 27, 1891.. ---;-1

(No Model.) 4 Sheets-Sheet 4.

H. SNOOKS. AUTOMATIC STEAM VACUUM PUMP. No. 462,069. Patented Oct. 27,1891.

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UNITED STATES PATENT OFFICE.

HENRY SNOOKS, OF JERSEY CITY, NEIV JERSEY.

AUTOMATIC STEAM VACUUM-PUMP.

SPECIFICATION forming part of Letters Patent No. 462,069, dated October27, 1891.

Application filed May 8, 1891. Serial No. 392,053. (No model.)

To all whom it may concern:

Be it known that I, HENRY SNOOKS, a subject of the Queen ofGreat'Britain and Ireland, and a resident of Jersey City, New 'Jersey,have invented an Improved Automatic Steam Vacuum-Pump, of which thefollowing is a specification.

One of the main objects of my present invention is to construct anautomatic steam vacuum-pump which shall have an increased capacity oversuch pumps as ordinarily made.

Further objects of my invention are to provide means for keepingtheupperparts of the working chambers cool, and also to improve the constructionof the pump in certainiof its details.

In the accompanying drawings, Figure l is a side elevation of myimproved automatic steam vacuum-prim p. Fig. 2 is a vertical section onthe line 1v 2, Fig. 3. Fig. 3 is a vertical section on the line 3 4,Fig. 2. Fig. at is a section on the line 5 6, Fig. 2-. Fig. 5 is asectional plan on the line 7 8, Figs. 1 and 2, but without the valves.Fig. 6 is a face view of the flanged lower part of two working chambersto which a cover-plate is to be attached; but in this View thecover-plate is shown as cut ofi. Fig. 7 is a sectional plan view on theline 9 10, Fig. 1. Fig. 8 is a plan View of the neckpiece for theadmission of steam.

My improved automatic steam vacuumpump is of that class illustrated inthe patents of Charles H. Hall, September 24, 1872, and the generalprinciple of operation is similar to that of the well-known pulsometersteam vacuumpump.

One of the features of my present invention is, as I have said, toincrease the capacity of the pump, and this I accomplish by constructingthe pump with two sets of working, vacuum, and discharge chambers inconnection with one steam-inlet, thus making a duplex automatic steamvacuum-pump.

Referring to the accompanying drawings, Fig. 3 shows in section a pairof Working chambers A A, having at their lower ends valves B B, whichmay be of any suitable construc- Below these valves is theinductionchamber I, having a foot-valve J of any suit able construction.S is the steam-inlet with a rolling-ball or other suitable valve V, the

position of which determines into which chamber the steam shall beadmitted. I pro vide a second set of working chambers A with valves B,induction-chamber I, and foot-valve .I. as will be readily seen onreference to Fig. 2 and other figures of the drawings; but the samesteam-valveV controls the admission of steam to both sets of chambers Aand A at the same time and with the same movement.

In connection with each set of working chambers A and A is provided adischargechamber D, with valves E of suitable construction and with theoutlet (1. As shown in Figs. 1, 2, 3, and 5 these discharge-chambers arearranged on opposite sides of the four working chambers A and A, so thatthe latter may be close together to permit their upper ends to bebrought close together at the top for control by the one steam-valve V.There is also in connection with each induction-chamber I avacuum-chamber C, Fig. 2, provided with an air-valve C, and opening intothe induction-chamber I (or 1) below the valves at the lower ends oftheworking chambers A, (or A.)

In order to keep the upper part of the working chambers A and A cool, Iutilize the space K, Fig. 2, between the upper parts of these chambersas a water-passage for the discharge, and for this purpose I carry thebranches F F, Figs. 1 and 3,fro1n the outlets d of thedischarge-chambers D to one side of this chamber K and have oneoutlet-pipe L, Fig. 3, from the other side of this chamber K.

As I have said, the valves 13 Band E E and .I J may be of any suitableconstruction; but for the valves B B and J J, I prefer to use the formillustrated, and consisting of a seat 5, a flexible flat valve 6, and aretainingguard 7. The seats 5 are adapted to suitable recesses in thecasing, and the guards and valves are held in place on the seat by meansof rods 8, bearing upon the guards at their inner ends, and threadednear their outer ends, where each is screwed into a threaded opening inthe casing. Jam-nuts 9 may be employed where desired. In order toconveniently get at these various valves, suitable cover-plates areused, such as the plates 18, for the two sets of chambers A and A, theplates 12 for the discharge-chambers D and D, and the plates 13 for theinduction-chambers I and 1. Instead of securing these cover-plates inplace each by a number of bolts and. nuts fitted into notches in theedges of the meetlug-flanges, I cast inside the flanges of each chamberwhere the cover-plates are to be applied recesses 14, into which can befitted the ends of cross-bars 15, having headed bolts 16, (see Figs. 3,6, and 7,) which are passed through openings in the cover-plates andtightened and held by means of suitable nuts 17.

The operation of the apparatus will be readily understood from theforegoing description, it being borne in mind simply that inasmuch asthere is one steam-inlet to both sets of chambers they both work at thesame time, and thereby greatly increase the capacity of the machine.

I claim as my invention 1. A duplex automatic steam vacuum-pump havingone steam-inlet valve and valve-chamber and two sets of Workingchambers, all close together, and having their upper ends all openinginto the one valve-chamber at the top,in combination with twodischarge-chambers on opposite sides of the working chamher and two setsof induction-chambers and valves, all substantially as described.

2. A duplex automatic steam vacuum-pump having two sets of workingchambers with valves, two induction-chambers with valves, and two valveddischarge chambers with pipes from the discharge-chambers opening into aspace between the upper parts of the working chambers, and anoutlet-pipe from said space, substantially as and for the purposedescribed.

3. An automatic steam vacuum-pump having valves and cover-plates on thecasing for access to the valves, the corresponding flanged part of thecasing having recesses 14, a bar 15 to engage with the recesses, and aheaded bolt passing through the bar and the coverplate, and nuts tosecure the latter in place, all substantially as described.

In testimony whereof I have signed my name tothis specification in thepresence of two subscribing Witnesses.

HENRY SNOOKS. Witnesses:

EDITH J. GRIsWoLD, JOHN REvELL.

